A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5950-01-406-0798
NSN 6110-00-115-5873
NSN 5925-01-092-9404
NSN 5990-01-568-5565
NSN 5990-01-374-1994
NSN 6105-01-510-5312
NSN 5920-01-542-2211
NSN 5905-01-279-0189
NSN 5910-01-118-5687
NSN 5835-01-155-0786
NSN 5930-01-519-3226
NSN 4140-01-019-0555